An Individual Identification by Using the Lip Shape as Password

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  • 口の形状をパスワードに用いた本人認証
  • クチ ノ ケイジョウ オ パスワード ニ モチイタ ホンニン ニンショウ

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In this paper, the authors propose a method of identifying individuals using the lip shape as password. Identifying individuals are able to be carried out by recognizing the password and the characteristic shape of the lip from the facial image. First, among the sequence of the images, each object image for processing is detected by using mouth movement information. Next step, in each image, the mouth region is detected by the color information. Then, the three shapes which are outside line of lip, the inside line of lip, and the center line of lip are extracted by using the change in distribution of gray level. Finally, the recognition of phoneme and individuals are carried out by the method based on the subspace method. As the training, the subspace method needs the 20 features extracted from the above three shapes. The experiments using the experimental system are performed to demonstrate the efficacy of this method and the experimental results are shown.

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